package com.cloudproviderhystrix.service;

import org.springframework.stereotype.Service;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;

import cn.hutool.core.util.IdUtil;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
	
	/**
	 * 正常访问
	 *
	 * @param id
	 * @return
	 */
	public String paymentInfo_OK(Integer id) {
		return "线程池:" + Thread.currentThread().getName() + " paymentInfo_OK,id:" + id + "\t" + "O(∩_∩)O哈哈~";
	}

	/**
	 * 超时访问
	 *
	 * @param id
	 * @return
	 */
	@HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHabdler", commandProperties = {
			@HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
		})
	public String paymentInfo_TimeOut(Integer id) {
		int timeNumber = 5;
		try {
			// 暂停3秒钟
			TimeUnit.SECONDS.sleep(timeNumber);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		return "线程池:" + Thread.currentThread().getName() + " paymentInfo_TimeOut,id:" + id + "\t" + "O(∩_∩)O哈哈~  耗时(秒)"
				+ timeNumber;
	}
	
	/**
     * 超时访问到这里兜底
     *
     * @param id
     * @return
     */
    public String paymentInfo_TimeOutHabdler(Integer id) {
        return "线程池:" + Thread.currentThread().getName() + " paymentInfo_TimeOutHabdler,id:" + id + "\t" +
                "系统繁忙，请稍后再试****o(╥﹏╥)o" ;
    }
    
    /**
     * 当id<0时会抛出一个运行时的异常，否则就是满足条件，打印一个UUID
     * @param id
     * @return
     */
	@HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
		@HystrixProperty(name = "circuitBreaker.enabled", value = "true"), // 是否开启断路器
		@HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数
		@HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), // 时间窗口期
		@HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),// 失败率达到多少后跳闸
	})
	public String paymentCircuitBreaker(Integer id) {
		if (id < 0) {
			throw new RuntimeException("******id 不能负数");
		}
		String serialNumber = IdUtil.simpleUUID();
		return Thread.currentThread().getName() + "\t" + "调用成功，流水号: " + serialNumber;
	}
	
	/**
	 * 兜底降级的方法
	 * @param id
	 * @return
	 */
	public String paymentCircuitBreaker_fallback(Integer id) {
		return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " + id;
	}


}
